Underground City is an area introduced in Monster Hunter EX 2. It is a large network of ruins situated underground, with many buildings that are overgrown with underground living organisms, and yet they still stand. There is said to be a "Power Generator" of some sort that still functions, since the power in these ruins are still going, though it is unknown what the Generator's power source is. Regardless, It is now home to many Underground living creatures. It can be accessed in Free Hunt. Like all free hunt areas, this area's layout is changed with each visit.